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`1ti Vfaire @anni @Hire LEAANDER RODNEY, or NEW YORK, N. Y.

Letters .Patent No. 74,430, datedviFebruary 11, 1868; antedated-January31, 1868.

` IMPROVED CEMENT-ROOEING.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, LEANDER RODNEY,`of New York city, county, and State,have invented a new and improved Method of Covering or Roofing Housesand other objects, and rendering the same water-proof, and

of increased strength and durability; and I do hereby declare that thefollowing is a full and exact description" thereof', reference being hadto the accompanying drawings, and to the letters of reference markedthereon.

Similar letters of reference refer to similar parts of the severalfigures. l The nature of my invention consists in covering the raftersor sheathing-boards, or other articles on which the roof is designed torest, with strips of wood, or other suitable material, of any desiredthickness, placed edgeways, (Figure 1,) 1 to 21, which strips aresecurely fastened together, by nails or otherwise, with irregular topedges, forming keys, 20 and 21; or grooved, 13 to 19 and 1 to'4; orirregular edges, 5 to 12, in which the cement rests, and hardens orsets. These are firmly fastened to the rafters, &c., and the coating ofcement, A, or other suitable material, is applied thereon, substantiallyas and for the purpose herein specified. In addition to this coating ofcement, covering the above-described strips, lay down sections or platesor sheets, 2f? and 26, made of two or more sheetspor breadthsor-thicknesses, a, b, and c, of paper, felting, burlaps, or othermaterial, with cement, or other suitable material, between the sheets.Each sheet to be of the same size, but to be set back from the edges ofthe lower sheet any convenient distance, say one inch, (Figures 2 and3,) so that, when laid on a. roof', the sheets will lit into each other,as shown in fig. 1, thus forming an even surface. Cement to be laid overthese edges, when laying them down, and these edges to be vafterwardsecured by nails with connectcd heads, (Figure 4,) or rather nails withlarge heads and two or more prongs, and a coat of cement or othersuitable material over all, B, iig. 1. v

What I claim as my invention, and desire to secure by Letters Patent,ius- 1. The application of strips of wood, or other suitable materialplaced edgeways, on the rafters or other support en which the roof`rests, these strips (of any desired thickness) being properly securedandfastened together, and this foundation serves as a. body on which toapplywater-proof cement, or other suitable material, substantially asand for the purpose herein specied. y

2. The application of cement, or other: suitable material, to two ormore sheets of paper, orother suitable material, to be used inconnection with the foundation, as above deseribedfor any other suitablefoundation, or separately, substantially as and for the purpose hereinspecified. i

LEANDER RODNEY. Witnesses:

GEO. H. FELT,

JAMES McKEE.

